Rotating hood for ventilation pipes, chimneys, and air extraction. Made of galvanized metal, very light, and weather resistant. It is installed quickly and easily to the extraction pipe. Hat designed to rotate with the action of the wind, so that the more the wind blows, the more the blades rotate, and the more powerful the air is sucked in from the inside out. It prevents the wind from entering with force inside the pipe, chimney, stove, etc., thus avoiding the undesirable effect of a house full of smoke. specs Rotating hood for ventilation pipes, chimneys, and air extraction. Made of galvanized metal, very light, and weather resistant. It is installed quickly and easily to the extraction pipe. Hat designed to rotate with the action of the wind, so that the more the wind blows, the more the blades rotate, and the more powerful the air is sucked in from the inside out. It prevents the wind from entering with force inside the pipe, chimney, stove, etc., thus avoiding the undesirable

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